Infiniti FX35, FX50 (S51). Manual — part 1128
REFRIGERANT
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PERIODIC MAINTENANCE
REFRIGERANT
Collection and Charge
INFOID:0000000005249896
SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
Evacuating System and Charging Refrigerant
Procedure
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling recharging
equipment
JSIIA0238ZZ
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling recharging
equipment
4.
Refrigerant container (HFC-134a)
5.
Weight scale (J-39650)
6.
Vacuum pump (J-39649)
7.
Manifold gauge set (J-39183)
A.
Preferred (best) method
B.
Alternative method
C.
For charging
JSIIA0239ZZ
HA-26
< PERIODIC MAINTENANCE >
[VQ35HR]
REFRIGERANT
WARNING:
Never breath A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting requirements
of SAE J-2210 [HFC-134a (R-134a) recycling equipment] or J-2209 [HFC-134a (R-134a) recovery equip-
ment]. Ventilate work area before resuming service if accidental system discharge occurs. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
1.
CHECK A/C SYSTEM
1.
Check that A/C system operates normally. Refer to
HAC-5, "WITHOUT ACCS : Description & Inspection"
(WITHOUT ACCS) or
HAC-8, "WITH ACCS : Description & Inspection"
2.
Check if there is a large amount of leakage of refrigerant or oil.
CAUTION:
Never perform the lubricant return operation if a large amount of leakage of lubricant is detected.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check for refrigerant leakage. Refer to
2.
LUBRICANT RETURN OPERATION
1.
Start the engine and run it as follows.
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Engine speed: Idle – 1,200 rpm
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A/C switch: ON
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Blower speed: Max. position
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Set temperature: FULL HOT
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Intake position: Recirculation (REC)
2.
Perform lubricant return operation for approximately 10 minutes.
3.
Stop the engine.
>> GO TO 3.
3.
CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Operate recovery/recycling recharging equipment.
CAUTION:
• Follow the instructions of the manufacturer for the handling or maintenance of the equipment.
• Never fill the equipment with undesignated refrigerant.
2.
Check the gauge pressure of recovery/recycling recharging equipment.
Is there pressure?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
DISCHARGE REFRIGERANT INSIDE PIPES
Discharge the refrigerant from the high-pressure hose and low-pressure hose of recovery/recycling recharging
equipment.
>> GO TO 5.
5.
CONNECT RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Remove the service valve caps from the vehicle.
2.
Connect recovery/recycling recharging equipment to the service valves.
>> GO TO 6.
6.
DISCHARGE REFRIGERANT FROM THE VEHICLE
Operate recovery/recycling recharging equipment to discharge the refrigerant from the vehicle.
>> GO TO 7.
7.
REMOVE ANY REMAINING REFRIGERANT
REFRIGERANT
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Evacuate air for approximately 10 minutes or more to remove any remaining refrigerant integrated to the com-
pressor oil, etc.
>> GO TO 8.
8.
REPLACE OR REPAIR REFRIGERANT SYSTEM PARTS
1.
Replace or repair the malfunctioning part.
CAUTION:
• Always use a new O-ring for the parts that the cooler system was removed.
• Apply compressor oil to the O-rings of piping when installing the piping. However, never apply it
to the threads.
2.
Adjust the compressor oil amount according to the replaced parts. Refer to
>> GO TO 9.
9.
EVACUATE AIR FROM THE REFRIGERANT SYSTEM
Evacuate air from the refrigerant system for approximately 25 minutes or more.
CAUTION:
Evacuate air for at least approximately 15 minutes or more if the parts are replaced.
>> GO TO 10.
10.
CHECK AIRTIGHTNESS OF REFRIGERANT SYSTEM
Check the airtightness of the refrigerant system for approximately 25 minutes or more.
CAUTION:
Check the airtightness for at least approximately 15 minutes or more if the parts are replaced.
Does the pressure decrease?
YES
>> GO TO 11.
NO
>> GO TO 8.
11.
CHECK REFRIGERANT LEAKAGE
1.
Connect refrigerant recovery/recycling recharging equipment or manifold gauge set (SST: J-39183).
2.
Charge the refrigerant of approximately 200 g (7.05 oz) to the refrigerant system.
3.
Check for refrigerant leakage. Refer to
.
NOTE:
When using electrical leak detector (SST: J-41995). Refer to
.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Repair or replace parts according to the inspection results.
12.
CHARGE REFRIGERANT
1.
Connect recovery/recycling recharging equipment or manifold gauge set (SST: J-39183).
2.
Evacuate air again.
3.
Charge the specified amount of refrigerant to the refrigerant system.
>> GO TO 13.
13.
CHECK REFRIGERANT LEAKAGE
Check for refrigerant leakage again. Refer to
.
NOTE:
When using electrical leak detector (SST: J-41995). Refer to
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 6.
14.
CHECK OPERATION
Check the A/C system for normal operation. Refer to
.
HA-28
< PERIODIC MAINTENANCE >
[VQ35HR]
REFRIGERANT
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Repair or replace parts according to the inspection results.
15.
CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Disconnect recovery/recycling recharging equipment or manifold gauge set (SST: J-39183).
2.
Discharge the refrigerant from the high-pressure hose and low-pressure hose of the recovery/recycling
recharging equipment.
3.
Install the service valve caps.
>> INSPECTION END
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